FLAT HOE Russian patent published in 1997 - IPC

FIELD: agricultural engineering, in particular, surface tillage of agricultural lands. SUBSTANCE: flat hoe has tine with working edge and rear wall. A-hoe with front cutting edge is fixed on rear wall of tine. Rear triangular horizontal wall positioned on lower part of tine rests on rear face and is provided with vertical opening in tine clearance. Shaped slot made in tine below rear wall is adapted to receive hoe retainer formed as rectangular prism with two pairs of different-length supports extending through their length. End faces of retainer are provided with cylindrical pivot joints which are alternately received in shaped slot of tine. Square opening is positioned centrally of retainer and axially aligned with vertical opening in rear wall for receiving countersunk-headed fastening bolt in the process of attachment of A-hoe of any thickness between rear wall and retainer. EFFECT: increased efficiency, simplified construction and improved quality of tilled soil. 3 cl, 5 dwg